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2. Train Protection & Warning System - Wikipedia

   en.wikipedia.org/wiki/Train_Protection_&_Warning...

   The 'arming' and 'trigger' loops work at 66.25 kHz and 65.25 kHz respectively. The brakes will be applied if the on-train equipment detects both frequencies together after having detected the arming frequency alone. Thus, an energised TSS is effective at any speed, but only if a train passes it in the right direction.

3. Train event recorder - Wikipedia

   en.wikipedia.org/wiki/Train_event_recorder

   Juridical Recording (orange) Blackbox as part of an ETCS equipment Indusi I60 ER24 control device with the DSK recorder inside. A train event recorder – also called On-Train Monitoring Recorder (OTMR), On-Train Data Recorder (OTDR), Event Recorder System (ERS), Event Recorder Unit (ERU), or Juridical Recording Unit (JRU) – is a device that records data about the operation of train controls ...

4. Kavach (train protection system) - Wikipedia

   en.wikipedia.org/wiki/Kavach_(train_protection...

   Primarily, Kavach works on the principle of continuous supervision of the movement authority and is designed to maintain train speed within the specified limits and can automatically apply brakes to slow down or to bring the train to a complete standstill, incase the Loco Pilots violates the speed restrictions or fails to act in time to prevent Signal Passed At Danger (SPAD); thereby reducing ...

5. Automatic train control - Wikipedia

   en.wikipedia.org/wiki/Automatic_train_control

   D-ATC indicator used on the E233 series trains. The digital ATC system uses the track circuits to detect the presence of a train in the section and then transmits digital data from wayside equipment to the train on the track circuit numbers, the number of clear sections (track circuits) to the next train ahead, and the platform that the train will arrive at.

6. Advanced Civil Speed Enforcement System - Wikipedia

   en.wikipedia.org/wiki/Advanced_Civil_Speed...

   Lack of a second speed limit below signal speed indicates ACSES is not in service. Advanced Civil Speed Enforcement System (ACSES) is a positive train control cab signaling system developed by Alstom. [1] The system is designed to prevent train-to-train collisions, protect against overspeed, and protect work crews with temporary speed restrictions.

7. Emergency brake (train) - Wikipedia

   en.wikipedia.org/wiki/Emergency_brake_(train)

   High-speed trains are usually equipped with a magnetic track brake, which can give about 0.3 m/s 2 extra, and give braking distances of about 850 m (2,790 ft) at 200 km/h (120 mph) and 1,900 m (6,200 ft) at 300 km/h (190 mph).